Combined gas and steam generator.



G. MARISGHKA.

COMBINED GAS AND STEAM GENERATOR.

APPLICATION FILED NOV.1,8, 1911.

Patented Jan. 7, 1913.

Z)" nil lesser:

UNITED STATES PATENT OFFICE.

CARI: MARISCHKA, OF VIENNA, AUSTRIA-HUNGARY.

COMBINED GAS AND STEAM GENERATOR.

Specification of Letters Patent.

Patented Jan. 7, 1913.

Application filed November 18, 1911. Serial 0..660,997.

The present invention has for its object a combined gas and steam generator, wherein a case or jacket is arranged so as to inclose the steam boiler forming the generator shaft so that the escaping gases are also forcibly, if so desired ,guided between the outer wall of the steam boiler and the said jacket. The known suction gas producers of similar type are provided with an evaporator serving for the production of an air-steam mixture to be introduced be low the grate of the gas generator, while the known steam boilers combined with the generator form a fire-tube boiler that lies above the generator shaft; all these apparatus however have the drawback of the gas generating shaft not being accessible from its cover so that the destruction of the prejudicious slag cakes formed in the shaft by means of pokers and the inspection of aswell as the free access to the fire is almostimpossible.

Applicant is cognizant of the existence of generator steam boilers that avoid this disadvantage, but these boilers have too small a boiler heating surface.

In the combined gas and steam. generator forming the object of the present invention, all these inconveniences are overcome by the arrangement that the gases generated in the generator shaft are guided into the intermediate space between the outer shell plate of the boiler andthe outer jacket, either from the upper bottom of the boiler through smoke tubes, or in the case of the boiler being constructed as a water tube boiler through the spaces between the water tubes connecting the upper to the lower drum. By this arrangement the generator shaft is accessible from above in its entire extent as also is the steam boiler in all its parts; the heating surface is considerably increased and the heat of the gases, guided in counter-stream to the steam as it is formed, is utilized as completely as possible.

In the construction shown in vertical section in the drawing two water chambers b, c are arranged one above the other in a known manner the upper chamber 0 projecting above the cover f of the gas generator and being separated from the lower chamber 12 by a free space. These water chambers inclosing with their inner surfaces at the gas generating shaft and are connected to each other by a system of vertical water tubes h, the gases formed in the gas generator flowing through the intermediate spaces between said tubes, whereupon they circulate about the lower water chamber 6 inclosed by the outer jacket d.

The gas outlet opening 2' in the jacket (I? is at the lower end. The generated steam employed for heating the gas generator, or for other purposes, passes at the delivery opening is.

Openings 9 are provided in the cover f through which the interior of the gas generator shaft can be inspected, whereas pokers can be introduced through openings 9 for break away slag cakes.

Claim-- Combined gas and steam generator, comprising a lower water chamber, an upper water and steam chamber, an. annulus composed of vertical water tubes, arranged in offset relation and connecting said two chambers, and a gas generator shaft formed by said upper and lower chamber and said annulus of vertical water tubes and means for closing said gas generator at the top, and a jacket surroundingsaid water chamber and said water tubes and provided with an outlet opening at its lower end to cause the gases produced in the gas generator shaft to pass between the said vertical water tubes into the jacket surrounding the lower water chamber and to circulate in contact with the outer wall of said lower water chamber.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CARL MARISCHKA. lVitnesses J osnn RuBAsoH, AUGUST FUGGER. 

